Elastomer CIP mold, polyurethane rubber material isostatic press bags, elastic mold for isopressing

Elastomer CIP mold, polyurethane rubber material isostatic press bags, elastic mold for isopressing powder forming, To reduce the load in the polyurethane isostatic pressing, the diameter of the container or D of the polyurethane mold should be as small as possible. This means that the thickness of the rubber should be small in comparison with the size of the cavity. To understand the effect of rH and rD on the shape or dimensions and density distribution of the compact, we carried out simulation. 

Cold isostatic compaction, where a shaped rubber bag is filled with powder, sealed and then subjected to high all-round pressure to produce a compacted green component, is a common processing route for ceramic components. The key to isostatic pressing is the design of the polyurethane bag which is in general both different in size and shape from the green body. This paper presents: the results of experiments to measure the powder and elastomer properties; finite element simulations of cold isostatic pressing; and comparisions between the two. The finite element simulations use an elasto-plastic, volume hardening plasticity model for the compacting powder and a finite deformation hyperelastic model for the rubber.

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